public static EitherUnsafe <Ret, L> bindUnsafe <R, L, Ret>(EitherUnsafe <R, L> either, Func <R, EitherUnsafe <Ret, L> > binder) => either.BindUnsafe(binder);
public static EitherUnsafe <L, Ret> bindUnsafe <L, R, Ret>(EitherUnsafe <L, R> either, Func <R, EitherUnsafe <L, Ret> > binder) => either.BindUnsafe(binder);